公开(公告)号：US20220076625A1

公开(公告)日：2022-03-10

申请号：US17464554

申请日：2021-09-01

Applicant: LG Display Co., Ltd.

Inventor： SeungHyuck Lee ,  Hyojung Park

IPC: G09G3/3233

Abstract: Embodiments of the disclosure relate to a self-emission display device and a self-emission display panel and include a fake subpixel disposed in a non-display area of the self-emission display panel and including a reference transistor controlled by a control signal and connected between a first voltage node and a detection node and a bias transistor controlled by a bias voltage and connected between a second voltage node and the detection node. Thus, it is possible to restore the initial characteristic value of the driving transistor in the subpixel disposed in the display area by driving the fake subpixel.

公开(公告)号：US11670234B2

公开(公告)日：2023-06-06

申请号：US17862085

申请日：2022-07-11

Applicant: LG DISPLAY CO., LTD.

Inventor： SeungHyuck Lee ,  Seungjong Bong ,  KiPyo Hong

IPC: G09G3/3233 ,  G09G3/3291

CPC classification number: G09G3/3233 ,  G09G3/3291 ,  G09G2310/08 ,  G09G2320/048 ,  G09G2330/021 ,  G09G2360/16

Abstract: Embodiments of the present disclosure relate to a display device and a display driving method. Specifically, there may be provided a display driving method including detecting a driving current per block unit, for a display panel where a plurality of subpixels are disposed, scaling driving current data per block unit to driving current data per subpixel unit, calculating first compensation data by comparing the driving current data per subpixel unit with target data, calculating final compensation data by comparing the first compensation data with guide data, and compensating for a characteristic value for the plurality of subpixels based on the final compensation data.

公开(公告)号：US11605342B2

公开(公告)日：2023-03-14

申请号：US17464554

申请日：2021-09-01

Applicant: LG Display Co., Ltd.

Inventor： SeungHyuck Lee ,  Hyojung Park

IPC: G09G3/3233 ,  G09G3/32

Abstract: Embodiments of the disclosure relate to a self-emission display device and a self-emission display panel and include a fake subpixel disposed in a non-display area of the self-emission display panel and including a reference transistor controlled by a control signal and connected between a first voltage node and a detection node and a bias transistor controlled by a bias voltage and connected between a second voltage node and the detection node. Thus, it is possible to restore the initial characteristic value of the driving transistor in the subpixel disposed in the display area by driving the fake subpixel.

公开(公告)号：US20220122540A1

公开(公告)日：2022-04-21

申请号：US17501529

申请日：2021-10-14

Applicant: LG Display Co., Ltd.

Inventor： Seongmin Choi ,  Hyojung Park ,  SeungHyuck Lee

IPC: G09G3/3258 ,  G09G3/3291

Abstract: A data driving circuit, controller, and display device include a compensation table for compensating for degradation of a light emitting subpixel. The compensation table may be generated or updated based on degradation of a dummy subpixel. The dummy subpixel is disposed in a non-active area, and has the same or similar characteristics to those of the light emitting subpixel as the display device is driven. Degree of degradation of the dummy subpixel may be sensed, and by degrading the dummy subpixel more rapidly than the light emitting subpixel, accuracy of sensing may be enhanced. The degradation compensation is performed in real time during driving of the display device, and is based on the compensation table generated or updated using the degree of degradation sensed on the dummy subpixel.